changeset 51358 | 0c376ef98559 |
parent 51357 | ac4c1cf1b001 |
child 53427 | 415354b68f0c |
--- a/src/HOL/Library/Extended.thy Wed Mar 06 12:17:52 2013 +0100 +++ b/src/HOL/Library/Extended.thy Wed Mar 06 14:10:07 2013 +0100 @@ -182,6 +182,9 @@ apply (simp only: numeral_inc one_extended_def plus_extended.simps(1)[symmetric]) done +lemma Fin_neg_numeral: "Fin(neg_numeral w) = - numeral w" +by (simp only: Fin_numeral minus_numeral[symmetric] uminus_extended.simps[symmetric]) + instantiation extended :: (lattice)bounded_lattice begin